Question

Use the substitution method to find the value of y in the given system of equations y=2x+5 x+y=4

Answer 1

y = 13/3

Explanation:

substitute y=2x+5 in x+y = 4

x+2x+5 = 4

3x+5=4

3x= -1

x= -1/3

substitute x= 1-/3 in x+y = 4

-1/3 +y = 4

y = 13/3